EK4 Cat into EK1 sedan?

[Mugen Civic]

Hello,

Is it true that the EK4 cat is more flowing than a EK1 cat?
And also issit the same length as the EK1 Sedan cat for a straight bolt on?

Cheers.

[Mugen Civic]

no one knows?

[Mugen Civic]

I've never tried to interchange the 2 cat convertors. But I've seen them both and they look to be similar dimensions.

Bolting a EK4 cat to a EK1 is not an upgrade. Their flow rates will be very similar.

Oh ic, thanks buddy!